Scientists discuss the 1.5C limit to global temperature rise

One of the major talking points during the negotiations at COP21 in Paris has been whether the international community should aim to limit global temperature rise to the internationally accepted 2C above pre-industrial levels, or a more stringent target of 1.5C.

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That 1.5C is garnering so much support is a welcome surprise, says Prof Joanna Haigh, co-director of the Grantham Institute for Climate Change and Environment. She tells Carbon Brief: